The Psychometric Toolbox: An Excel Package for Use in Measurement and Psychometrics Courses

The Psychometric Toolbox (PT) is a user-friendly, non-commercial package mainly intended to be used for instructional purposes in introductory courses of educational and psychological measurement, psychometrics and statistics. The PT package is organized in six separate modules or sub-programs: Data preprocessor (descriptive analyses and data transformations); Guttman scaling (item analysis and individual scoring based on Guttman's model); Classical Item Analysis (CTT-based item analysis and reliability estimation); Item Factor Analysis (FA-Based [...]

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